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Sport Flyers Rhythm 3D EP Assembly Instructions Manual

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Celebrating 35 years serving modelers the world over, Hobby People wanted to bring their customers a top-performing 3D foamy
that was light, versatile, fun, and affordable. A nice model to celebrate 35 years of making planes for the real champions, those who
fly for fun!
Working with aeronautical engineers and modelers from around the world, Hobby People presents the Rhythm. The Rhythm is as
neutral and as uncoupled as we could ever hope for in a foamie bipe. Almost zero roll-coupling, and almost zero compensation
needed for inverted and knife edge flight, the Rhythm is amazingly smooth throughout the flight envelope. You'll notice amazing
rudder response, yet with properly set up control throws and exponential, the Rhythm is smooth and "honest". Indeed, it is fun and
the Sport Flyer is going to love flying the Rhythm.
Check out our website for more information about other exciting sport flyers products!
The Sport Flyers Rhythm 3D EP Biplane is sold exclusively
in the USA by Hobby People
18480 Bandilier Circle, Fountain Valley, CA 92708
Copyright © 2006, Hobby People - All Rights Reserved
Version 1.0 March 2007
Wing span top and bottom: 30 Inches (762mm)
Weight rtf: 13 Ounces (369gr)
radio required: 4-Channel or More w/3 Micro Servos and Micro Rx
esC required: KMS 18 Amp Brushless
Made in China
WWW.hobbypeople.net
A SSEMB LY INSTRUCTIONS
Wing loading: 5.5 Ounces/Square Foot (156gr/dm
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Factory-Cut and -Printed Foam Parts
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Full-Shape Fuselage with Foam Stiffeners and Sheet-Foam Elliptical Wings
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Carbon Fiber Stiffeners for Great Strength
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Carbon Fiber Landing Gear with Lightweight Wheels and Wheel Covers
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Accepts a Wide Range of Outrunner Brushless Motors and Micro Radio Equipment
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Different Color Scheme on Top and Bottom Presents Well During Maneuvers
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Great Flying Characteristics
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Includes all Necessary Hardware
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Fast and Easy Assembly - 60 High-Resolution Digital Photos to Guide You
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speCifiCations
Wing area: 350 Square Inches (22.6dm
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2
)
Motor required: KMS 2208/26 Brushless Outrunner Motor
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battery required: Impulse Power 3 Cell 900mAH LiPO
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Page 
features
2
)
length: 33 Inches (838mm)
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functions: Elevator, Rudder, Throttle and Ailerons
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Kit product number 160532

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Summary of Contents for Sport Flyers Sport Flyers Rhythm 3D EP

  • Page 1 Celebrating 35 years serving modelers the world over, Hobby People wanted to bring their customers a top-performing 3D foamy that was light, versatile, fun, and affordable. A nice model to celebrate 35 years of making planes for the real champions, those who fly for fun! Working with aeronautical engineers and modelers from around the world, Hobby People presents the Rhythm.

  • Page 2: Table Of Contents

    Hobby People will not disclose the information it collects to outside parties. Hobby People does not sell, trade, or rent your personal information to others . Your privacy is important to us. Page ...

  • Page 3: Important Information About Foam - Please Read

    our reCoMMenDations Please read through this entire section very carefully. We have provided you with recommendations that, if followed, will result in a great flying airplane. Failure to follow our recommendations may result in a poor flying airplane. reCoMMenDeD brushless poWer systeM The Rhythm 3D EP Biplane can be flown using a variety of brushless direct drive Outrunner motors.

  • Page 4: Lithium Polymer Battery Warnings - Please Read

    lithiuM polyMer battery WarninGs - please reaD WARNINGS AND SAFETY PRECAUTIONS FOR ALL BRANDS OF LITHIUM POLYMER BATTERIES Please read and understand the warnings listed in this section. Make sure to read any and all warnings included in the packaging with your battery, too. If used improperly, lithium polymer (LiPO) batteries can be very dangerous, so please follow these warnings and suggestions at all times.

  • Page 5: Tools And Supplies Required

    tools anD supplies reQuireD o 5 Minute Epoxy o Pencil o Foam-Friendly Thin and Thick C/A o T-Pins q Aerosol Zip-Kicker o Builder's Triangle o # 0 and #1 Phillips Head Screwdrivers o 220 Grit Sandpaper with Sanding Block o 1.5mm Hex Wrench o Masking Tape o Adjustable Wrench o Paper Towels...

  • Page 6: Motor Installation

    tips froM the pros Do not throw away any of the extra pieces of carbon fiber strips and carbon fiber rods until after you're done with assembly. Make sure to test-fit the parts together before applying glue. This will ensure that the parts fit properly before gluing them together. When gluing anything that has a smooth surface, like the plastic doublers, roughen the gluing surfaces lightly with 220 grit sandpaper.
  • Page 7 o Install the aluminum motor mount (included with our motor) onto your motor, using the screws provided with your motor. o Apply a couple of drops of foam-friendly thin C/A into the three corresponding motor mount screw holes in the firewall and allow the C/A to fully cure. The C/A will harden the surrounding plywood, making it stronger.

  • Page 8: Stabilizer Installation

    stabiliZer installation you'll neeD the folloWinG parts froM the Kit: o (D) Horizontal Stabilizer with Elevator - 1 o (u) Carbon Fiber Strip - 1 you'll neeD the folloWinG tools anD supplies: o 5 Minute Epoxy o Masking Tape o Foam-Friendly Thick C/A o Waxed Paper q Aerosol Zip-Kicker o Paper Towels...

  • Page 9: Rudder And Aileron Hinging

    o Draw a centerline mark on the trailing edge of the stabilizer. IMPORTANT Before gluing the stabilizer into place in the next procedure, make sure that the stabilizer is aligned 90º to the straight portion of the fuselage side below the stabilizer. Use a builder's triangle to check this. This will ensure that the stabilizer is level. o Slide the stabilizer into the fuselage and align it, using the notch in the leading edge and the centerline mark that you drew as a reference.
  • Page 10 step 1: hinGinG the ruDDer o Sand a 45º bevel into the left side of the leading edge of the rudder. o Hinge the rudder to the back of the fuselage, using the same techniques that you used to hinge the elevator to the stabilizer. step 2: installinG the Carbon fiber support strips o Cut two carbon fiber strips to a length of 26-1/4"...

  • Page 11: Wing Installation

    step 4: hinGinG the top WinG ailerons o Sand a 45º bevel into the bottom of the leading edge of the two top wing ailerons, then hinge the ailerons to the top wing, using the same techniques that you used to hinge the ailerons to the bottom wing. WinG installation you'll neeD the folloWinG parts froM the Kit: o (f) Outer Wing Struts - 2...
  • Page 12 o Glue the two outer wing struts to the top of the wing, making sure that the back edge of each strut is even with the hinge line. Use a builder's triangle to make sure that the wing struts are perpendicular to the wing. IMPORTANT Note the direction the wing struts are mounted.

  • Page 13: Control Systems Installation

    o Glue the two carbon fiber rods to only the bottom of the bottom wing, using two small doublers. q Once the glue cures, cut the carbon fiber rods off flush with the surface of the wing. o With the bottom wing perfectly flat, glue the two carbon fiber rods to the top of the top wing, using two small doublers, then cut the carbon fiber rods off flush with the surface of the wing.
  • Page 14 step 2: installinG the eleVator Control linKaGe asseMbly IMPORTANT When installing the control horn backplate in the next procedure, make sure that the flat portion of the backplate is facing away from the elevator. o Carefully cut the front of the control horn mounting base off (a), then install the control horn onto the bottom of the elevator, using the backplate provided.
  • Page 15 o Slide the second piece of heat-shrink tubing over the carbon fiber rod, then install the Z-Bend in the second piece of wire into the middle hole in the control horn. o Center both the elevator servo and the elevator, then slide the heat-shrink tubing over the wire.
  • Page 16 step 4: installinG the aileron serVo o Install the aileron servo into the servo mounting hole in the bottom wing, using a couple of dabs of foam-friendly thick C/A to secure it into place. Because the size of servos differs, you may need to cut the servo mounting hole larger to fit your particular servo.

  • Page 17: Landing Gear Installation

    o Working with one side of the wings for now, use masking tape to hold both the top and the bottom ailerons centered. q Slide one piece of heat-shrink tubing over each carbon fiber rod on the ailerons, then slide the ends of the long piece of carbon fiber rod into the ends of the heat-shrink tubing.

  • Page 18: Final Assembly

    o Repeat the previous procedures to align and install the second landing gear strut. IMPORTANT Make sure that both wire axles are even with each other (the same distance from the bottom of the wing) or else the airplane won't sit level on the ground.
  • Page 19 step 1: installinG the WinG fenCes o Glue two wing fences to the top wing and two wing fences to the bottom wing, making sure that the back edge of each wing fence is even with the aileron hinge line. Use a builder's triangle to make sure that the wing fences are perpendicular to the wing.

  • Page 20: Balance Point And Control Throws

    balanCe point anD Control throWs balanCe point the Center of Gravity (C/G or balance point) is 2-5/8" (67mm) back from the leading edge of the top wing, measured at the center of the wing. WARNING For test flying and general sport flying, we suggest you balance the airplane at the C/G recommended above. For 3D flying, you may want to experiment moving the C/G back in small increments until you're satisfied with the result.
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  • Page 23: Product Evaluation Sheet

    Do not use staples and make sure our address faces out. Hobby People will not disclose the information it collects to outside parties. Hobby People does not sell, trade, or rent your personal information to others. Your privacy is important to us.

  • Page 24: Global Services

    _______________________________ _______________________________ Post Office will not deliver _______________________________ without proper postage (Return Address Here) Hobby People attn: Global services 18480 Bandilier Circle Fountain Valley CA 92728-8610 fold along dotted line Page ...

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